The puzzling case of the missing cookie.

Once upon a time Bessi wanted to eat a cookie, but she got called away to do something. Bessy said to Kiki and Fifi not to touch her cookie. When she got back the cookie was gone! Bessi was devastated! But then she decided she'd find the culprit! After some snooping she called the mice together. 'My sisters!', she said. 'We have gathered here today to find a thief!'. 'I have told you not to touch my cookie while I was gone! But one of you did!'. Bessi continued 'Kiki told me that she went to sleep when I went away, she said she couldn't do it because she was asleep the whole time, Fifi said that she went on a run in the wheel and then went to sleep.' 'But one of you lied!' 'One of you took my cookie. So although Kiki had crumbs all over her whiskers she said that they were not the crumbs from this cookie. I examined them and I concluded that Kiki was NOT guilty.'. Kiki sighed in relief. 'Then I interviewed Fifi', continued Bessi. 'It's true that Fifi's alibi was pretty solid, but she broke down. She said she PEED all over the cookie and the owners took it away. I did some more snooping And I saw my cookie in the garbage. So case closed!'.